01 400ex rebuild
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01 400ex rebuild
If you just want a 440 piston and a sleeve call curtis sparks and ask for a 88.5mm piston and sleeve. Go with a 11:1 J.E piston, any thing higher will cause your head gaskets to blow very often. If you don't plan on hard- facing your rocker arms then get a all-around web cam (451/450 grind). If you want to port your head sent it to curtis sparks or ct racing, both in california. This might take up to four months to do and get shipped back to you.
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